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14 Small Trees for Small Spaces

Small gardens, or even small areas within larger gardens, need a tree in scale with the size of the area in which it will sit. But, aside from a handful of species, conventional trees are just too big for these smallest of spaces, and would require yearly pruning to contain its size within the proportion of the space - a job not for the faint of heart, and an expensive one, to boot. So, what are your choices? Well, have you considered upscaling a shrub? Many shrubs are quite suitable and could provide the solution. With just a bit of judicious pruning – a much easier task than cutting a tree – they can offer the benefits of a tree in a size that is more in scale with your area. While frequently pruned trees can looked awkward with missing limbs, shrubs amenable to pruning don’t. The most frequent request is for reasonably fast growing species; as large shrubs and trees are relatively slow growing plant categories, the best you can hope for speed-growth wise is a meter’s growth per year in warm, high rainfall regions; less in cooler, drier areas. Local rainfall, temperature, soils, and aspect will also influence plant growth, so figures given can only be used as guidelines. Where foundations, extensive paving, or unsuitable soils make the digging of a planting hole too difficult, many species on the list grow well in large containers. How to do it:From the outset, soon after planting, trim the shrub from a multi-stemmed to a single-stemmed specimen. Better yet, when buying, look for a specimen already sporting a single stem or without too many lower branches if possible. This will be your starting point; any new stems that start to grow below the main flush of leaves must be cut off. The trees below have non-invasive roots. It is advisable to protect even frost tolerant species for the first couple of year.This fairly extensive list acknowledges the wide variety of growing conditions experienced by gardeners around the country; hopefully, there is sufficient variety to suit most areas. Our list below describes species that usually grow no more than 5 m. - both upscaled shrubs or small trees.

CALPURNEA AUREA - Natal Laburnum

Size: 3 – 4 m; plant in light, dappled or partial shade or sun; moderate drought; evergreen; container; mild frost; Drooping sprays of bright yellow flowers cover this small tree in a good year. The canopy is light and high up so provides only limited shade. Carpenter bees love the flowers. Some gardeners suggest the tree only lasts 5 or so years, but mine is 14 years old and still flowers profusely. Grows in forest, on forest margins and in clearings, on hillsides or the edge of wooded kloofs and in bushveld; Eastern Cape, Gauteng, KwaZulu-Natal, Limpopo, Mpumalanga.



Size: 2 – 4 m with a 2 – 3 m spread; evergreen; plant in light to partial shade or sun; quick growing; lovely pink flowers in summer; container plant; screen; can plant close to walls and paving; attracts insects and birds and butterfly host plant; moderate frost; easy to prune. Grows in savanna-bushveld and forest, rocky slopes in Eastern Cape, Gauteng, KwaZulu-Natal.


CLAUSENA ARISATA - Horsewood /Perdepis

Size: 4 m; prune lower branches; glossy leaves; lovely small white bell-like flowers spring to summer; plant in shade to partial shade where it flowers better; host plant to several swallowtail butterflies; small berries attract birds; moderate to fast growth; moderate to high rainfall; tolerates moderate frost. Grows in forest, forest edges and woodlands in the Eastern Cape, Free State, KwaZulu-Natal, Limpopo, Mpumalanga, Western Cape.



Size: 3 – 4 m; plant in light, dappled to partial shade or full sun; container; evergreen; drought tolerant; half-frost hardy; salt, sand, and wind tolerant. Grows in dunes, rocky slopes, in forests, along streams, in scrub and open grassland; Eastern Cape, Gauteng, KwaZulu-Natal, Northern Cape, Western Cape.



Size: Up to 5 m; small yellow-green flowers April to August; plant in full sun; good in Sandy soils; container; drought hardy; frost hardy; wind tolerant; prune lower branches; fast growing. Grows in a variety of habitats from arid, semi-arid to high rainfall regions; Eastern Cape, Gauteng, KwaZulu-Natal, Limpopo, Mpumalanga, Northern Cape, North West, Western Cape, Northern Cape, North West, Western Cape.



Size: 2 – 3 m; prune up lower branches; mauve- purple- lilac flowers October to April; plant in sun to partial shade; container; semi-deciduous; tolerates harsh frost; drought hardy. Woody grassland in Gauteng, KwaZulu-Natal, Limpopo, Mpumalanga, North West.


RHAMNUS PRINOIDES - Blinkblaar / Dogwood

Size: 4-5 m; screen; tiny flowers November to January; fruits attract birds; frost hardy; evergreen; fast growth; plant in semi-shade to sun; lovely, glossy foliage. Grows on mountain and wooded slopes, in forests and on stream banks, frequently among rocks; Eastern Cape, Free State, Gauteng, KwaZulu-Natal, Limpopo, Mpumalanga, Northern Cape, North West, Western Cape.



Size: 2-3m; plant in full, light to partial shade or sun; provides a light, dappled shade; drought tolerant; moderate frost; prune lower branches; salt spray tolerant; wind tolerant; purple flowers in summer; attracts insects, birds, and butterflies. Savanna-bushveld, savanna-Lowveld, thicket, grassland and forest in the Eastern Cape, Free State, Gauteng, KwaZulu-Natal, Limpopo, Mpumalanga, North West, Western Cape.



Blueveld Bluebush

Size: 2 – 4 m; creamy-white flowers September to December but male and female are on separate trees, so plant at least 3. Deciduous; easy to prune into required tree shape; plant in sun or light shade; good container plant; small creamy bell flowers along branches in autumn; only female plants bear fruits; moderate growth; attracts insects, birds, and butterflies – good nesting site for small bird species. Fost hardy, drought hardy. A robust species for extreme areas. Grasslands and savanna-bushveld in Eastern Cape, Free State, Gauteng, Limpopo, Mpumalanga, Northern Cape, North West, Western Cape.


OCHNA NATALIA - Natal (Showy) Plane

Size: 3 m; prune lower branches; beautiful foliage; ornamental yellow flowers in spring; red and black berries; moderate to slow growth but flowers early. Plant in sun or semi-shade; screen; moderate drought; prefers good rainfall; half-hardy; semi-deciduous; moderately fast growth; Grows on rocky outcrops, in bushveld and on forest margins in Eastern Cape, Gauteng, KwaZulu-Natal, Limpopo, Mpumalanga, North West.



Size: 3 – 4 m; coastal species; prune lower branches; screen; plant in partial shade to full sun. Small white flowers in early winter, sweet smelling; red berries; resists sea breezes; hardy; moderate to slow growth speed; mild frost; moderate drought; attracts butterflies, birds and insects. Grows in dune forests and coastal bush; Eastern Cape, KwaZulu-Natal.


BAUHINIA TOMENTOSA - Yellow Bell Bauhinia

Size: 3 – 4 m; beautiful yellow bell flowers through the year with a good flush through mid -summer; provides a light, dappled shade; fast grower; plant in sun or partial shade; moderate frost; wind and salt resistant. Grows in forest margins; savanna-bushveld; rocky slopes, coastal dunes, woodland in the Eastern Cape, Gauteng, KwaZulu-Natal, Limpopo, Mpumalanga.



Size: 4-5 m; scented white, sometimes pale pink flowers in spring to the end of autumn; evergreen with a light canopy. Plant in full sun; pear-shaped shiny green fruits; prune lower branches. Attracts bees, hawk moths and butterflies; quick growing; prefers warm gardens with moderate rains; light frost; moderate drought. Forest margins and bushveld, on cliff edges and steep, rocky slopes; Limpopo, Gauteng, Mpumalanga, and KwaZulu-Natal.




Size: 4m evergreen; sharp spines; masses of small scented flowers in August; yellow-orange fruits in midsummer that make a tasty jam; prune lower branches; single-sexed so plant more than one; moderate growth; plant in sun to partial shade; drought tolerant; moderate frost; wind tolerant; evergreen. Grows in valley bushveld, dry areas, wooded grassland and on forest edges; Western Cape, Eastern Cape, KwaZulu-Natal; Mpumalanga.


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